Electric Traction For three-phase induction motors which of the following is the least efficient method of speed control? Cascade control Combination of cascade and pole changing Pole changing Rheostat control Cascade control Combination of cascade and pole changing Pole changing Rheostat control ANSWER DOWNLOAD EXAMIANS APP
Electric Traction The value of coefficient of adhesion will be high when rails are Greased Cleaned with sand Wet Sprayed with oil Greased Cleaned with sand Wet Sprayed with oil ANSWER DOWNLOAD EXAMIANS APP
Electric Traction Automatic signalling is used for which of the following trains ? Mail and express trains All of the listed here Suburban and Urban electric trains Superfast trains Mail and express trains All of the listed here Suburban and Urban electric trains Superfast trains ANSWER DOWNLOAD EXAMIANS APP
Electric Traction The horsepower of steam locomotives is 500 to 1000 2500 to 3000 1500 to 2000 Up to 1500 500 to 1000 2500 to 3000 1500 to 2000 Up to 1500 ANSWER DOWNLOAD EXAMIANS APP
Electric Traction When a bogie negotiates a curve, reduction in adhesion occurs resulting in sliding. Thus sliding is acute when None of the listed here Degree of curvature is more Wheel base of axles is more Both of the listed here None of the listed here Degree of curvature is more Wheel base of axles is more Both of the listed here ANSWER DOWNLOAD EXAMIANS APP
Electric Traction Coefficient of adhesion is High in case of D.C. traction than in the case of AC. traction Low in case of D.C. traction than in the case of AC. traction Equal in both AC. and D.C. traction All of the listed here High in case of D.C. traction than in the case of AC. traction Low in case of D.C. traction than in the case of AC. traction Equal in both AC. and D.C. traction All of the listed here ANSWER DOWNLOAD EXAMIANS APP
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